Abstract
AbstractA new 4α‐methylsterol, violasterol A, with three known flavonoids‐luteolin, luteolin 7‐O‐β‐D‐glucoside and tricin‐were isolated from ethanolic extract of whole plants of Viola formosana. The structure of vioiasterol A was assigned to be (22E)‐4α‐methyl‐24ξ‐isopropenyl‐5α‐cholesta‐7, 22‐diene‐3β‐ol (1) on the basis of spectral and chemical evidence.
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